$**$please help me fill in the correct cardinality for each highlighted box $($either a N for "many" or a $1.$ ALSO come up with how tables you need based on the REA diagram.

Here is some info about the company:

Mike$$s Auto Shop is an automotive maintenance and repair shop located in Las Vegas, Nevada. The shop is owned by Mike, and he employs several ASE$-$certified mechanics as full$-$time employees. The shop$$s administrative functions are primarily run by Mike$$s wife, Mary, who is also an employee of the company.

When a new customer calls the shop or walks in to the office, Mary creates a customer file in the database and records pertinent information about the customer and the customer$$s vehicle$($s$).$ Each customer and each vehicle receive a unique identifier in the database.

Customers must schedule appointments with Mary to have their cars serviced. Mary schedules the appropriate amount of time needed, based on the customer$$s request for a specific service $($e$.$g$.,$ brake repair, oil change, radiator replacement$).$

When the customer arrives, a mechanic receives the order from Mary and begins work to fill the request. The mechanics record any inventory used during the service $($e$.$g$.,$ oil filter, brake pads, radiator$)$ to be added to the customer$$s invoice. Once the work is complete, Mary receives the updated sales order from the mechanic, creates an invoice for the customer, and collects payment.

Mike$$s Auto Shop requires customers to pay at least $50$ percent of the cost at the time of a visit, but they allow customers to pay off the remaining balance within $30$ days. Some customers pay the entire balance up front, but others pay $50$ percent now and $50$ percent at the end of the month. Mike$$s accepts cash, checks, and Visa or MasterCard.

When a mechanic notices that the shop needs to order new parts or other inventory items, he sends a purchase requisition to Mary. She fills out a purchase order and sends it to one of three approved vendors. The vendors ship items as they are available, so it is possible for a single order to be spread across multiple shipments. The vendor does not, however, combine multiple orders in a single shipment.

Each of the approved vendors has agreed to allow Mike$$s Auto Shop to carry a monthly balance.$$ Mike$$s Auto receives a monthly statement each month from the three vendors, and Mary submits payment in full each month to pay off the balances.